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Finding the Fourth Proportional to 66,001.62, 99,000.78 and 19,254.90

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Solution

The fourth proportional to 66,001.62, 99,000.78 and 19,254.90 is: 28,881.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,001.62 : 99,000.78 = 19,254.90 : x
  2. Step 2: Convert to fraction form
    66,001.62/99,000.78 = 19,254.90/x
  3. Step 3: Cross multiply
    66,001.62x = 99,000.78 × 19,254.90
  4. Step 4: Simplify right side
    66,001.62x = 1,906,250,118.82
  5. Step 5: Solve for x
    x = 1,906,250,118.82/66,001.62
  6. Step 6: Final answer
    x = 28,881.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.